Omg spot the error (yes I do know what it is)

1/(-1)=(-1)/1
sqrt(1/(-1))=sqrt((-1)/1)
1/i=i/1
1=-1

OMG!!!

>>12
NO U
sqrt isn't simply an abbreviation of square root, it's a function also known as √.
(and SPOILER: it doesn't return the set of all square roots)